package com.sunhao.gulimall.product.service.impl;

import com.sunhao.common.constant.ProductConstant;
import com.sunhao.gulimall.product.dao.AttrAttrgroupRelationDao;
import com.sunhao.gulimall.product.dao.AttrGroupDao;
import com.sunhao.gulimall.product.dao.CategoryDao;
import com.sunhao.gulimall.product.entity.AttrAttrgroupRelationEntity;
import com.sunhao.gulimall.product.entity.AttrGroupEntity;
import com.sunhao.gulimall.product.entity.CategoryEntity;
import com.sunhao.gulimall.product.service.CategoryService;
import com.sunhao.gulimall.product.vo.AttrGroupRelationVo;
import com.sunhao.gulimall.product.vo.AttrRespVo;
import com.sunhao.gulimall.product.vo.AttrVo;
import lombok.extern.slf4j.Slf4j;
import org.apache.commons.lang.StringUtils;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.util.Arrays;
import java.util.Collection;
import java.util.List;
import java.util.Map;
import java.util.stream.Collectors;

import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
import com.baomidou.mybatisplus.core.metadata.IPage;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.sunhao.common.utils.PageUtils;
import com.sunhao.common.utils.Query;

import com.sunhao.gulimall.product.dao.AttrDao;
import com.sunhao.gulimall.product.entity.AttrEntity;
import com.sunhao.gulimall.product.service.AttrService;

@Slf4j
@Service("attrService")
public class AttrServiceImpl extends ServiceImpl<AttrDao, AttrEntity> implements AttrService {

    @Autowired
    private AttrAttrgroupRelationDao relationDao;

    @Autowired
    private AttrGroupDao attrGroupDao;

    @Autowired
    private CategoryDao categoryDao;

    @Autowired
    private CategoryService categoryService;

    @Override
    public PageUtils queryPage(Map<String, Object> params) {
        IPage<AttrEntity> page = this.page(
                new Query<AttrEntity>().getPage(params),
                new QueryWrapper<AttrEntity>()
        );

        return new PageUtils(page);
    }

    @Override
    public void saveAttr(AttrVo attr) {
        AttrEntity attrEntity = new AttrEntity();
        //1.保存基本数据
        BeanUtils.copyProperties(attr,attrEntity);
        this.save(attrEntity);
        //2.保存关联关系 销售属性没必要保存
        if (attr.getAttrType() == ProductConstant.AttrEnum.ATTR_TYPE_BASE.getCode())
        {
            AttrAttrgroupRelationEntity relationEntity = new AttrAttrgroupRelationEntity();
            relationEntity.setAttrGroupId(attr.getAttrGroupId());
            relationEntity.setAttrId(attrEntity.getAttrId());
            relationDao.insert(relationEntity);
        }




    }

    /**
     * 规格参数查询
     * @param params
     * @param catelogId
     * @param attrType
     * @return
     */
    @Override
    public PageUtils queryBaseAttrPage(Map<String, Object> params, Long catelogId, String attrType) {
        QueryWrapper<AttrEntity> queryWrapper = new QueryWrapper<AttrEntity>().eq("attr_type","base".equalsIgnoreCase(attrType)
                ?ProductConstant.AttrEnum.ATTR_TYPE_BASE.getCode()
                :ProductConstant.AttrEnum.ATTR_TYPE_SALE.getCode());
        if(catelogId != 0)
        {
            queryWrapper.eq("catelog_id",catelogId);
        }
        String key = (String) params.get("key");
        if(!StringUtils.isEmpty(key))
        {
            queryWrapper.and((wrapper)->{
                wrapper.like("attr_name",key).or().eq("attr_id",key);
            });
        }
        IPage<AttrEntity> page = this.page(
                new Query<AttrEntity>().getPage(params),
                queryWrapper
        );
        //封装分页数据
        PageUtils pageUtils = new PageUtils(page);
        List<AttrEntity> records = page.getRecords();
        List<AttrRespVo> list = records.stream().map((attrEntity) -> {
            AttrRespVo attrRespVo = new AttrRespVo();
            BeanUtils.copyProperties(attrEntity, attrRespVo);
            //设置分类和分组的名字
            AttrAttrgroupRelationEntity attrId = relationDao.selectOne(new QueryWrapper<AttrAttrgroupRelationEntity>().eq("attr_id", attrEntity.getAttrId()));
            if (attrId != null && "base".equalsIgnoreCase(attrType)) {
                AttrGroupEntity attrGroupEntity = attrGroupDao.selectById(attrId.getAttrGroupId());
                attrRespVo.setGroupName(attrGroupEntity.getAttrGroupName());
            }

            CategoryEntity categoryEntity = categoryDao.selectById(attrEntity.getCatelogId());
            if (categoryEntity != null) {
                attrRespVo.setCatelogName(categoryEntity.getName());
            }

            return attrRespVo;
        }).collect(Collectors.toList());
        pageUtils.setList(list);
        return pageUtils;
    }

    /**
     * 参数查询时回显数据，包括完整信息 相比AttrEntity多了catelogName，groupName，catelogPath，attrGroupId
     * @param attrId
     * @return
     */
    @Override
    public AttrRespVo getAttrInfo(Long attrId) {
        AttrEntity attrEntity = this.getById(attrId);
        AttrRespVo respVo = new AttrRespVo();
        BeanUtils.copyProperties(attrEntity,respVo);
        //1.分组信息：ttrGroupId,groupName
        //首先获取attr与attrGroup的中间表AttrAttrgroupRelation
        if (attrEntity.getAttrType() == ProductConstant.AttrEnum.ATTR_TYPE_BASE.getCode())
        {
            AttrAttrgroupRelationEntity attrgroupRelation = relationDao.selectOne(new QueryWrapper<AttrAttrgroupRelationEntity>().eq("attr_id", attrId));
            if (attrgroupRelation != null)
            {
                respVo.setAttrGroupId(attrgroupRelation.getAttrGroupId());
                AttrGroupEntity attrGroupEntity = attrGroupDao.selectById(attrgroupRelation.getAttrGroupId());
                if (attrGroupEntity != null)
                {
                    respVo.setGroupName(attrGroupEntity.getAttrGroupName());
                }
            }
        }


        //2.分类信息
        //2.1 分组路径
        Long catelogId = attrEntity.getCatelogId();
        Long[] catelogPath = categoryService.findCatelogPath(catelogId);
        respVo.setCatelogPath(catelogPath);
        //2.2 分组名称
        CategoryEntity categoryEntity = categoryDao.selectById(catelogId);
        if (categoryEntity!=null)
        {
            respVo.setCatelogName(categoryEntity.getName());
        }

        return respVo;
    }

    /**
     * 更新AttrRespVO 销售参数只修改基本就可以
     * @param attr
     */
    @Override
    public void updateAttr(AttrRespVo attr) {
        AttrEntity attrEntity = new AttrEntity();
        BeanUtils.copyProperties(attr, attrEntity);
        this.updateById(attrEntity);

        if (attrEntity.getAttrId() == ProductConstant.AttrEnum.ATTR_TYPE_BASE.getCode())
        {
            AttrAttrgroupRelationEntity relationEntity = new AttrAttrgroupRelationEntity();
            relationEntity.setAttrGroupId(attr.getAttrGroupId());
            relationEntity.setAttrId(attr.getAttrId());

            //判断是新增还是删除
            Integer count = relationDao.selectCount(new QueryWrapper<AttrAttrgroupRelationEntity>().eq("attr_id", attr.getAttrId()));
            if (count > 0){
                relationDao.update(relationEntity, new QueryWrapper<AttrAttrgroupRelationEntity>().eq("attr_id", attr.getAttrId()));
            }else{
                relationDao.insert(relationEntity);
            }
        }
    }


    /**
     * 根据分组id查询关联的所有属性
     * @param attrgroupId
     * @return
     */
    @Override
    public List<AttrEntity> getAttrRelation(Long attrgroupId) {
        List<AttrAttrgroupRelationEntity> entities = relationDao.selectList(new QueryWrapper<AttrAttrgroupRelationEntity>().eq("attr_group_id", attrgroupId));
        List<Long> attrIds = entities.stream().map(entity -> {
            Long attrId = entity.getAttrId();
            return attrId;
        }).collect(Collectors.toList());

        if (attrIds == null || attrIds.size()==0)
            return null;

        Collection<AttrEntity> attrEntities = this.listByIds(attrIds);

        return (List<AttrEntity>) attrEntities;
    }

    /**
     * 移除分组关联
     * @param vos
     */
    @Override
    public void deleteRelation(AttrGroupRelationVo[] vos) {
        List<AttrAttrgroupRelationEntity> entities = Arrays.asList(vos).stream().map(item -> {
            AttrAttrgroupRelationEntity relationEntity = new AttrAttrgroupRelationEntity();
            BeanUtils.copyProperties(item, relationEntity);
            return relationEntity;
        }).collect(Collectors.toList());

        relationDao.deleteRelation(entities);
    }

    /**
     * 获取分组没有关联的属性
     * @param params
     * @param attrgroupId
     * @return
     */
    @Override
    public PageUtils getNoRelationAttr(Map<String, Object> params, Long attrgroupId) {
        //1.当前分组只能关联自己所属的分类里的所有属性
        AttrGroupEntity attrGroupEntity = attrGroupDao.selectById(attrgroupId);
        Long catelogId = attrGroupEntity.getCatelogId();

        //2.当前分组只能关联别的分组里没有引用的属性
        //2.1 当前分类下的所有分组
        List<AttrGroupEntity> attrGroupEntities = attrGroupDao.selectList(new QueryWrapper<AttrGroupEntity>().eq("catelog_id", catelogId));
        List<Long> attrGroupIds = attrGroupEntities.stream().map(attrGroupEntity1 -> {
            return attrGroupEntity1.getAttrGroupId();
        }).collect(Collectors.toList());
        //2.2这些分组关联的属性
        List<AttrAttrgroupRelationEntity> relationEntities = relationDao.selectList(new QueryWrapper<AttrAttrgroupRelationEntity>().in("attr_group_id", attrGroupIds));
        List<Long> attrIds = relationEntities.stream().map(relationEntity -> {
            return relationEntity.getAttrId();
        }).collect(Collectors.toList());
        //2.3 从当前分类的所有属性中移除这些属性
        QueryWrapper<AttrEntity> wrapper = new QueryWrapper<AttrEntity>().eq("catelog_id", catelogId).eq("attr_type", ProductConstant.AttrEnum.ATTR_TYPE_BASE.getCode());
        if (attrIds != null && attrIds.size() > 0)
            wrapper.notIn("attr_id",attrIds);
        //模糊查询
        String key = (String) params.get("key");
        if (!StringUtils.isEmpty(key))
        {
            wrapper.and(w->{
               w.eq("attr_id",key).or().like("attr_name",key);
            });
        }

        IPage<AttrEntity> page = this.page(new Query<AttrEntity>().getPage(params), wrapper);

        return new PageUtils(page);
    }

    @Override
    public List<Long> selectSearchAttrIds(List<Long> attrIds) {
        return this.baseMapper.selectSearchAttrIds(attrIds);
    }

}